Lunar Module Abort Guidance System - NASA's History Office

73 Pages·2005·1.19 MB·English

NASAT N0 -7990
NASA TECHNICAL NOTE
CASE
F-ILE
COPY
APOLLOE XPERIENCREE PORT-
GUIDANCEA ND CONTROLS YSTEMS:
LUNAR MODULE ABORT GUIDANCES YSTEM
M.
Pat Kurnt e
B.
LndonJ ohnSspoanCc een ter
y
77058
HoustToenx,a s
NATIONAAELR ONAUTAINCDSS P ACAED MINISTRATWIAOSNH INGTDO.NC ,. JUL1Y9 75
• •
1.R eportN o. I2.G o vernmeAnctc essioNno . 3.R ecipienCta'tsa lNoog.
NASA TN D-7990
4.T itlaen dS ubtitle 5.R eportD ate
July1 975
APOLLO EXPERIENCE REPORT
GUIDANCE AND CONTROL SYSTEMS: 6.P erformOirngga nizaCtoidoen
LUNAR MODULE ABORT GUIDANCE SYSTEM JSC-08589
7.A uthor(s) 8.P erformOirngga nizatReipoonr t No.
JSC S-424
PatM . Kurten
10W.o rkU nitN o.
9.P erformOirngga nizaNtaimoena ndA ddress 976-10-41-01-72
LyndonB . JohnsoSnp aceC enter 11.Co ntraocrtG rantNo .
HoustonT,e xas 77058
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12S.po nsoriAngge ncNya mea ndA ddress TechnicaNlo te
NationaAle ronautiacnsd S paceA dministration 14S.p onsorinAggen cy Code
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CONTENTS
Section Page
SUMMARY. 1
INTRODUCTION . 1
•
ACRONYMS 2
DISCUSSION 4
PreliminaLrMy AbortC oncept• s. 4
ProgramR edefinit•i•o.n 6
SystemD escritpion 7
TestP rogram• . . 14
SoftwarDee velopment 19
AbortG uidancSey stemM ission Revis•i.o ns 25
MissioOnp eratio.n . • • . . •. . .. . . . 26
AbortS ensoArs semblDye velopmePnrto blems 28
AbortE lectroniAcsss emblDye velopmePnrto blems 35
DataE ntrya ndD isplaAys semblDye velopmePnrto blems 40
AbortG uidancSey stem SoftwDeavreel opmePnrto blems 42
Capability Est• i.m a. .t e• • . .. 45
FlighPte rformancaen dA nomalies 50
PROGRAM OBSERVATIONS 58
Schedul.e . • • • . . •. . 58
Thermal-VacuuAmc ceptance 59
CompatibilTietsyt ing 59
• • • •
DualS ourceP rocurement 59
Asst:nnbly Reliability 59
• • •
iii
Section Page
TransienPtr otection . . . . . . . . . . .. . . . . . . . . .. . . 59
SoftwarDee velopment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Memory Functions . . . . . . . . . . . . . . . . . . . .. .. . . . . 60
Scael-FactoArs ymmetry 60
ElectrolunmeiscenDti splay 60
. . . . . . .. . . . . . . . . . . . . . . . . . .
Pushbuttons 60
• . . . • . . . . . . . . . . . . . . . . . . . .. .. .. . . . .
PushbuttSowni tches 60
Environmental Testing 61
Ground-uSpport-EquipmHeenatt ers 61
AbortS ensorA ssemblyM issioAnc ceptance 61
•
AbortS ensorA ssembly 61
GyroF luid 61
GyroR esonanFtr equency 62
EngineeriMnogd el 62
AssemblyC abling 62
•
VibratiTorna nsmissibility 62
Split-PWiinr eW rapping 62
ProgramI ncentiv.e s 62
CapabiliRteyt ention 62
SubcontracTteosrt P articipation 63
ProgramC ontrol 63
Earht-OrbiSto ftwea rPrograms 63
. . . . . . . . . . . . . . . . . . . . .
Test Programs 63
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MissioPne rformancAen alysis 63
. . . . . .
GyroR undownT ime 64
• . . . • •
iv
·--��- ···-----
Section Page
ProgrEavaml uaRtieooprnt iTnecgh nique 64
0 0 0 0
InertialA lPniaecmktea nge 64
0
BackGuupi ndcaDeef inition 64
0 0 0 0 0 0
NailhBeoanCdd ap acitors 64
o
FligChotn neIcntgtoreri ty 65
0
WokrP ackages 65
o o o o o o
Ealps-eTidmeIn dicaant"do Gr"Bs a lls 65
0 0 0 0
ChcekoMuete tings 65
0 0 0 0 0 0 0 0
ComupteSrt aurpSt equence 65
0 0 0 0
OperaEtrroorLr i ghts 66
0 0 0 0
CONLCUDINGR EMARKS 66
v
TABELS
Table Page
I ABORTS ENSOARS SMEBLYS PECFIICAOTNIV ALUES . 10
IIA BORTS ENOSRA SESMBLYT IM-ETSABILILTIYM ITS 11
. . . . . . . .
ABORTS ESNORA SSEMBLYR EPEATIALBITLYI MTIS. 12
III
IVE ARTPHR ELAUNCCHA LIBRIAOTNT IM-ETSABILILTIYM ITS 13
V DESIGVNER IFICIAOTNT ESITNGE NVffiONMENTS
FORT HEA GS 15
. . • . . . • . . • . • . • • • • . .
VI ACCPETANCTEE TSSP ERFORMOENDT HEA GS 18
VIIA BORTG UIDANCES YTSEME RROR MODEL I
CAAPBILIETSTYI MATE 46
. . . . . • • • • • .
VIIAIB ORGTU IDANSCYESE TM ERORRM ODELI I
CAAPBILIETSTYI MAT.E .. ....... 47
.
ABROTG UIDANCSEY TSEME RRORM ODEL III
IX
CAAPBILIETSTYI MATE 48
. . . . . . . . . . . •
X ABORGTU IDANSCYETS EME RRORM ODEL IV
CAAPBILIETSTYI MATE 49
• . • . . . . . . . • .
XI FINAPLI CF,I NLAE PC,A NDI FDCA TAO F THE AGS 50
XIII N-FLIGTH DETREMINATIOOFGN Y ROA NDA CCLEEROMTEER
BIAISN F REEF LIGH.T . . . . . . . . . 5.1 . . . . . . . . .
• .
XIIAI LINEMEANCTC URACISOE FT HEP GNCSD URING THE
APOLOL M9I SSI.O N. . . . . . . . . . 5.1 . . . . . . .
.
XIVA COMPARISOONFT HE VM AGNIDTEUSF ORA LLB URNS 52
G
XV A COMPARIOSNO FT HE RENDEZOVUSM ANUEVER VLEOCITSI E
ASC OMPUTEBDY T HEA GSA NDT HEG ROUND. . . . .5 2. . .
.
XVIA LINEMEANCTC URACISEO FT HEP GNSCD URINGT HE
APOLLO1 M0I SSIO.N . . . . . . . . . 5.3 . .
.
XVIIG YROA NDA CCLEERMOETECRA LIRABTIONS 54
XVIIAI C OMAPRIOSNO FA GSA NDP GNSCB URN RESIDUALS 54
vi
Table Page
ALINMEENTA CCURACISOE FT HEP GNCSD URINTGH E
XIX
APOLOL 11M ISSIO.N . . . . . 55
. .
XX GYRO-DRIPFETRF ORAMNCDEA TA. . . . 56
XXI ACCLEEROMTEERB IAINS FREEF LIGH.T 57
XXII A COMPARSIONO FB URRNE SIDUALS. . . 58
FIGURES
Figure Page
1 Abogruti dasnycsetc eomm ponents
(aD)a ta eanntddrs iyp yla asselmyb 7
(bA)b osrte nsaossre mbly 7
. . . . •
(cA)b oerltce trosna isscemyb. l . . 7
2 Aborste nsaossre myba lsymmerteriqyru ements 11
3 Coleliprteincd ezfvlhoitupg sr ofile 26
4 Gyrboi ahsi sto.r y. . . 56
. .
5 Acceerlometbeiarhs i story 57
vii
APOLLOE XPEIRNECER EPOTR
GUIDANCE ACNODNT ROSLY STEMS:
LUNAR MDUOLEA BORGTU IDANCES YSTEM
ByP aMt. K urten
LyndoBn.J ohnsonS pacCeen ter
SUMMARY
Witrhes petcott h leu nmaodru laeb ogruti dasnycset tehmAe,p olPlroo gmr a
experiiennccleut dhfeeu drl nalg oef p rogm rdaeevlopmfernotrm e uqiremtehnurtgosh
desni,dg evleopmeanntpd,r oducatnicdo lunm itneawdit hs ucescfsufll i.g Ahsta
resluto fp rleiminlaurn-yaba rorctno cetpsa,s trpeadpd-woni nearlst-einspoarc kage
foarti tturdeef eranedn caoenpe no-olppr ogmrearw ersee leedtc otp rovaisdcete n
steerifnoglr nu ar-orbiints ertAi coelnap.re cryinitohonr tbc iuold be obtained by
postritnisboeunrs n,a nrde ndezwvaostuo bs ea ccomplbiyms ehaendos fe xternal
ifnromat.i Ao pnrogm rraedneiftiiino1 n69 4a ddtehdre e uqireenmt afc oelrra p eri­
cynthoirobfnir to tmh ien itaibaoblru tr ann d rtehqeu irfeomarer netn dezwviotuhsi n
thleu nmaord uflueeb lud get wiintfhoorumtfa rtoismoo rnuc eosu tstihdleeu nar
modu.l Teher euqiraecdc ucyro af stthreea d-pdpowpna ckwaagset hereifnocrree ased,
anadg eneral-dpgiuirtcpamoolps uert c enotai4ni0n9wg6o rsdo fm emorrye platcheed
oepnl-ooppr oagmre.r A dsiplanadyk eybodavercidew as afdodcrer de cwmo munica­
tiownist h ctmohpueet r.
ITNROUDCTOIN
Thel unmaord u(lMLe) a bogrutai ndcseys te(mA GrSe)p sreentthsfe i rst­ opera
tiolun sagaeo f sat readp-pwdngo uaindecs yesmt. TheA GS wdaessi gnaenddd e vleoped
spcefiiacllfyoa rp palitiocnt hAep olLlM.oT heA GSi sc moposoefad s tra-ppdweond
in
(ofri dx)ei ner-tesinaoslrp ack,at ghee asbneoosrrat s sbelm(yA AS)a;g enepruarlp-ose
diigtcamolp urtw eiths epcliiaziendp/ ouuttptuhtae,b oerlte ctraossneimcb(slA yE )A;
anadd siplayk eaynbdo daervdif cocerer wc momuinctaiownit h ctohmutepe ,rt hdeta a
entarnydd ilsapays msbel(yD EAD).T he AfGoSrs mt hdei tgaiplo rtoifaoh ny bdr i
diigt/aalnalgougi daannccdeo ntsryoslt aenmdi sc onfigtuopr reodv aiudteo mcaotnic­
troflomr i ssioanb orrestu ltfirnogamp rimagruyi dasnysctee( mGP Sm)a lftuinocn.
TheA GSw ass upplbiyte hde LM cpnortaircmteuo nred rN ASAc ongizaanttc hee
NASAL yndBo.nJ ohnSspoaenCc ent(eSJrC) ( forymt ehrMela nnSepda cefctr aCenter
(MSC)). subctoarnct.e TdheA SAw as
Thes ysterme sponsiboiflt ihtey .AWGHS!'l
fuhrerts ubocntrabcytt hesedu bconttrota hcAetSA o vre dno.r Thes fotwafroetr h e
AEAw asc ontrabcyM tSeCdd i rteltcyot hseu bnctoroar.c t
As aitdot hree daerw,h ernee csesrayt hoer iingauln iotfms e asuhraevb eee n
an
cnovretetdot heeuq ivavlaeelni utnt hSeys etmeI nternadtU'ineoisnt( aS.lI T)heS I
uniatrswe r itnft ierasnttd,h oer giinuanlsi a trwer itptaerne nitchaetlthleyar fert.e
ACRONYMS
ACE acecptancchee ocuketuq ipmte n
AEA aboereltc rtonsia cssmebly
AGS abogrutai ndecs yesmt
ASA abosretn saosrsm ebly
BPA Behtpa,gN eewY ork
C&W cautiaonwnda rning
CARR customaecrct eapnrcaeed isnsre eview
CDH cnosatndtfi fenrteihaeli ght
CDU copulidnagtu an it
CES conotlree lctrosnysitmce s
CM commnadm odule
CSI ceollipsteiqcu einnciet iate
CSM commnada nsd ervmiocdeeu l
DEDA data endtirpsyaly a asenmsdb ly
DMCP deisgmni ssiocno pmutperro gram
DR desigrne port
DTO deatiltesedto bjeicvte
DVT deisgvne friiactitosent
EL el ectrionslecu emn t
EMI eelctraogmneitneitrcf erence
2
EPC Eartphr leaunccalhi bration
FACI fisrta rticcnolfei guriasntpeiciotonn
FEB functeielocnrtaolnb ilco ck
FMES fumlilss ioenn gineseirmiunlga tion
FRR flirgehdatni essr eview
FS flhitsg imutloar
GSE grousnudp-peouqritp ment
HSSC HamlitoSnt andardC enStyres tem
HVSIR H-evtcosrp iinn pruectit fication
IA inpaxuits
ICS inrtpeerticvmoep utsemiru lation
IFC inl-ifgchlati bration
JSC LyndBo.n JohSnpsaoCcnee n ter
KSC JohnK eFn.n eSdpyae cC enter
LM lunmaord ule
LOS linoef sight
LSC lunsaurr fcaalcieb ration
MSC MannSepda ccrefatC enter
MSOB MannSepda ccretafO peratBiuoinlsd ing
OA outpaxuist
PERT progmr eavaluartieopno rtteicnqhgun ei
PIC presitnallcaaltiiborna tion
PGNSC primagruyin dcaen,a vigaatnicdoo nn,t sryoslt em
PGS primagruyi dasnycset em
PTSA pultsoeur iqnsge rmvpolaifier
3